It's a good personal policy you have and I'm sorry you had to
  deal with that individual at that point in time. Being in
  service takes an amazing amount of patience and tolerance with
  people, people whose only contact with you is them exhibiting
  their worst behavior. I've often heard it said that everybody
  should get mandatory military service. I don't know if that's
  true, but what I *can* suggest as a requirement for anybody
  entering adult life is: Mandatory customer service. It works
  wonders.